脂肪酸衍生中干细胞外体保护质细胞免受高葡萄糖损伤,通过调节KEAP1/NRF2/HO-1轴
Yixuan Yuan1, Shijie Song1, Yujie Xiao1
1Department of Burns and Cutaneous Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China.
Cellular signalling
|October 16, 2025
概括
脂质衍生性介质干细胞外体细胞 (ADSC-Exos) 保护糖尿病伤口愈合中免受高葡萄糖诱导的损伤. ADSC-Exos可以缓解氧化应激和上皮-介质酶过渡,促进更快的伤口关闭.
科学领域:
- 生物医学工程 生物医学工程
- 再生医学是一种再生医学.
- 伤口治愈研究研究 伤口治愈研究
背景情况:
- 糖尿病中高血糖症显著影响慢性伤口愈合.
- 氧化应激和上皮介质过渡 (EMT) 是加剧糖尿病伤口并发症的关键机制.
- 目前用于糖尿病慢性伤口的治疗方法的疗效有限.
研究的目的:
- 为了研究脂肪衍生的介质干细胞外体 (ADSC-Exos) 的治疗潜力,以减轻高葡萄糖诱导的角质细胞损伤.
- 评估ADSC-Exos在促进糖尿病伤口愈合中的有效性.
- 阐明ADSC-Exos在保护氧化应激和EMT的基础分子机制.
主要方法:
- 通过纳米粒子追踪分析 (NTA),传输电子显微镜 (TEM) 和免疫染来分离和表征ADSC-Exos.
- 在体外研究中,使用ADSC-Exos治疗高葡萄糖 (HG) 暴露的HaCaT细胞.
- 在体内研究中使用了一种糖尿病小鼠伤口模型,用ADSC-Exos治疗.
主要成果:
- 在HG治疗的角质细胞中,ADSC-Exos治疗显著降低了活性氧物种 (ROS),DNA损伤 (8-OHdG) 和脂质过氧化 (MDA).
- ADSC-Exos激活了KEAP1/NRF2/HO-1抗氧化途径,并抑制了病态EMT标记物 (N-cadherin,α-SMA,Vimentin),同时恢复了E-cadherin.
- 在糖尿病小鼠中,ADSC-Exos加速了伤口关闭,增强了原沉积,并降低了促炎性细胞因子 (IL-1β,IL-6,TNF-α).
结论:
- ADSC-Exos显示出对高葡萄糖诱导的氧化应激和细胞中EMT的显著保护作用.
- ADSC-Exos通过调节KEAP1/NRF2/HO-1信号通路来促进糖尿病伤口愈合.
- ADSC-Exos代表了一种有前途的无细胞治疗策略,用于治疗糖尿病慢性伤口.
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